# Science 8 vs Rissa Citizen Science

The clearest difference is iOS requirement: Science 8 at 11.0 against Rissa Citizen Science's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Science 8 ships an update every 3 months, Rissa Citizen Science every 4 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Science 8 | Rissa Citizen Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/science-8/id1082583626/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 32 MB | 57 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IdeateGames](https://appshunter.io/developer/446654404) | [Rissa Citizen Science](https://appshunter.io/developer/1807336593) |

## What reviewers say

### Science 8

[App page](https://appshunter.io/ios/app/science-8/id1082583626)

This app offers interactive tools and practice tests to help middle school students visualize and understand key science concepts. It includes simulations for density, molecular activity, and population dynamics, along with practice tests covering various science subjects.

**Highlights:** Interactive molecular activity demonstration, Density and buoyancy simulation, Comprehensive science practice tests, Category building exercises, Statistics exploration tool, Food web population dynamics simulation

**Features:** macOS Compatibility

**In-app purchases:** none


### Rissa Citizen Science

[App page](https://appshunter.io/ios/app/rissa-citizen-science/id6744367129)

**In-app purchases:** none


## Frequently asked questions

### Is Science 8 free?

Science 8 is free to download, with no in-app purchases.

### Is Rissa Citizen Science free?

Rissa Citizen Science is free to download, with no in-app purchases.

### Do Science 8 or Rissa Citizen Science have ads?

Neither Science 8 nor Rissa Citizen Science shows ads.

### Which is updated more often, Science 8 or Rissa Citizen Science?

Science 8 ships an update every 3 months, and Rissa Citizen Science every 4 months. Most recently, Science 8 was updated on October 2, 2026 and Rissa Citizen Science on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*